41D 41. DC045 20142015.a. Identifier is a reference to memory locations which can hold values. State two (2) rulesfor naming the identifier.b. State whether the following variables names are valid or invalid.Variable Names(i)Valid/InvalidSpricePercentage2(ii)(ii)Cost_of_livingc. Identify the suitable variable declaration for the following statement."A program that will display the mark and grade for a student. "Variable NameData Type(i)mark(ii)graded. The following declarations have errors. Correct the errors by rewriting the declaration.(i)char numl= 98, num2 = 76, num3 = 54;(ii)int 1", 2, 3d ;(iii)int long.

41 d) (i) character variables should be enclosed in single quotes in the given declarations they…

Answered: d. The following declarations have…

d. The following declarations have errors. Correct the errors by rewriting the declaration. 6) char numl= 98, num2 = 76, num3 = 54; (ii) int 1", 2 , 3" : (iii) int long.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Related questions

Q: 1. X 0 0 0 0 1 1 1 Output of F(x, y, z) y 0 0 1 1 0 0 1 Z 0 1 0 1 0 1 0 F 0 0 1 1 0 0 0

A: A Boolean function is a mathematical expression that takes binary input variables and produces…

Q: Design a circuit that counts the number of 1l's present in 3 inputs A, B and C. Its outpur is a…

A: solution :

Q: 3. Design a combinational circuit with three inputs and one output. a. The output is 1 when the…

A: Task : Given the 3 inputs. The task is to find the combinational circuit for the given conditions.

Q: A wireless network administrator is using 3 access points (APS) to cover an area. At some locations,…

A: It is essential for a wireless network administrator to allocate suitable channels when installing…

Q: What is the weight of 6 in each of the following decimal numbers? a. 1,386 b. 54,692 c.…

A: I have mentioned hand writened image , please find in below

Q: 1. What is the length of a second in milliseconds (ms)? a) In a second, how many microseconds (s)…

A: a) 1000 milliseconds in 1 second b) 1000000 microseconds in 1 second c) 1000000 nanoseconds in 1…

Q: d. The function main. e. The function prototype for cube. f. The identifier y in the function…

A: First understand what function scope, file scope, block scope or function prototype scope are: 1.…

Q: 316 431 232 and 7' 3 Find the remainders of: 11

A: Note: Here you didn't mention any programming language so we are going to find the remainders using…

Q: Number 9

A: See the solution below-

Q: Given the following de

A: Access Specifiers/ Access modifiers are keywords in object-oriented languages like java, c++ ,etc.…

Q: 4) Design a circuit that takes a 4-bit unsigned integer A-(asazaião) and multiplies it by 10 using…

A: Given that, 4 bit unsigned integer A= (a3a2a1a0) Another number is: 10 and it's binary value is…

Q: Section 8.4 22. What is abstraction? How do objects provide abstraction? rivate keywords

A: The method of simplifying complex systems by focusing on the key aspects while discarding the…

Q: =C mod n 29 M = 32 mod 65 %3D M = %3D

A: The above function is an example of exponential modular function or exponential mode function. we…

Q: how do I convert the 1234567890 into （123) 456-7890 the code must be in R cod

A: Lets see the solution.

Q: Does the development process provide any challenges for the developers?

A: Introduction: The Internet of Things consists of two main parts. a thing or item that you want to…

Q: 12. Assume that the following classes have been defined: 1 public class Flute extends Blue { public…

A: Define a class called Flute that extends the Blue class. Override the method2 method to print out…

Q: Convert the following decimal numbers to binary numbers. (a) 20 (b) 121 (c) 97 (d) 205

A: The solution to all 4 questions are given in the below step

Q: Let L be the language accepted by the automaton in Figure 2.2. Find a dfa that accepts L².

A: An automata is defined as an abstract and theoretical notion of a machine that perform a specific…

Q: Show that B,..., B, are also Kraus operators for E. 6. Even though the Kraus representation gives an…

A: Hey there, I am writing the required solution of the questin mentioned above. Please do find the…

Q: Number 2

A: Here from the question, we need to answer question no. 23 The public and private keywords are used…

Q: Import the text file PB Participants.txt as a table, using Tab delimiters and the General column…

A: Open excel and create the participants name list and save it as tab delimiters txt file. (like…

Q: V/ This pseudocode is intended to display employee net pay values. // All employees have a standard…

A: 1) Pseudocode in question does below activity It declare variables name, hours, rate, DEDUCTION,…

Q: Which of the following is a treap? H R 45 22 38 b. 78 N H 45 28 M 38

A: The right answer will be option(a) Explanation:- A treap is a combination of tree+heap(binary tree)…

Q: Write a Pseudocode and draw a Flowchart

A: According to the question we need to write pseudocode and draw a Flowchart to find and print the…

Q: complete the following UMLS for TwoDShape class (Super Class) and subclasses Rectangle and Ellipse…

A: please note than , you have mentioned different question and different diagram. In the question you…

Q: Write appropriate mutator methods that store values in these fields and accessor methods that return…

A: Solution - Programming language used - Java All necessary comments are included in program code as…

Q: Q emo & XEX

A: Here we have identified an image with different shapes in it. You certain techniques we can identify…

Q: L becomes the Root Node

A: Properties of 2-3 tree: 1.Each node has either one or two values.2.A node with one value is either a…

Q: Given the array [aC@35, bD$74, hX#21, tZ%98, k1&3P]. [Let, A = 65, B = 66, C = 67, ... Y = 89, Z =…

A: Here, I have to provide a solution to the above question.

Q: 1.7¹ mod 23 = 7 2.72 mod 23 = 3 3.74 mod 23 9 = 4.78 mod 23 = 5.716 mod 23 = || 6.732 mod 23 = 7.764…

A: We know that-: (ab) mod p = ( (a mod p) (b mod p) ) mod p…

Q: Section 9.2: Interacting with the Superclass 4. Explain the difference between the this keyword and…

A: Difference between this and super keyward: Keyword Description Usage this Refers to the…

Q: a) Derive the state diagram, describe the meaning of each state clearly. Specify the type of the…

Q: D C A F E B H K G

A: a) For graph (i) ordering found is SCC1 {C,J,F,H,I,G,D} and SCC2 {A,E,B}…

Q: 10 a Draw the circuit produced using the nearest neighbor algorithm starting at the vertex on the…

A: Given graph is:

Q: Python Write a Brute force algorithm to find all the common elements in two lists of integer…

A: Input:Accept two lists of integers, `list1` and `list2`.Initialize Result List:Create an empty list,…

Q: For an online storage application like Google Drive, which of the following is best suited?…

A: Here have to determine correct option for open layer, and online application like Google drive.

Q: A program developed for a Web store represents customer acc appear to be mathematically imprecise.…

A: 43) The developer might have used a fixed number of bits to represent the number, so when the…

Q: Point class that extends Point.) 26. Declare a method called getsideCount in the shape interface…

A: In programming, a method is a block of code that performs a specific task or action. It is often…

Q: omputer Architecture Convert the following IEEE single-precision floating-point numbers to their…

A: a) (6589 0000)16This hexadecimal value needs to first be converted to binary format.(6589 0000)16 =…

Q: Convert each octal number to decimal:(a) 148 (b) 538 (c) 678 (d) 1748(e) 6358 (f) 2548 (g) 26738 (h)…

A: Note: There are multiple questions are given in one question. According to the rule, you will get…

Q: Write a python program to spilt a string on the last occurrence of the delimeter

A: Required:- Write a python program to spilt a string on the last occurrence of the delimiter.…

Q: 1. Consider the four trees below: (b) GH (c) (d)

A: THIS IS A MULTIPART BASED QUESTION. ONLY FIRST THREE PARTS ARE SOLVED. KINDLY SEND THE REMAINING…

Q: 1.

A: The unified process is an iterative process The answer is True Explanation The Unified Process is…

Q: Simple Functions RESTRICTION: You may not te the Python bult-in fanction you are itmplementing…

A: The Answer is in Below Step

Q: defect LOC 12000 effort people 3 alpha beta 24 168 29 27200 20200 62 440 86 5 gamma 43 314 64 q/…

A: Metrics are used to measure performance such as productivity, defect ratios, effort, cost and so on.…

Q: 20. Imagine that you are going to write a program to play card games. Consider a design with a Card…

A: Hello student Greetings When designing a program to play card games, one possible design is to…

Q: Given the statement: If the patient took the medicine, then she had side effects. The inverse,…

A: 20. The correct answer is: (b) b. Inverse: If the patient didn't take the medicine, then she didn't…

Q: What the decimal place name for each of the underlined digits

A: A) 4 tenth 2 hundredth 3 thousandth B) 3 tenth 2 hundredth 6 thousandth 7 ten thousandth 8 hundred…

Concept explainers

Fundamentals of Input and Output Performance

The I/O subsystem is a component of computer system design that uses buses to assist communication between the Central Processing Unit, Computer Memory/Storage, and Input and Output Devices (that is known as peripheral devices). The I/O subsystem includes disc controllers, tape drives, discs, system buses, and other devices. The I/O database application reads and writes drives using the operating system windows I/O.

Question

41D

41. DC045 20142015.
a. Identifier is a reference to memory locations which can hold values. State two (2) rules
for naming the identifier.
b. State whether the following variables names are valid or invalid.
Variable Names
(i)
Valid/Invalid
Sprice
Percentage2
(ii)
(ii)
Cost_of_living
c. Identify the suitable variable declaration for the following statement.
"A program that will display the mark and grade for a student. "
Variable Name
Data Type
(i)
mark
(ii)
grade
d. The following declarations have errors. Correct the errors by rewriting the declaration.
(i)
char numl= 98, num2 = 76, num3 = 54;
(ii)
int 1", 2, 3d ;
(iii)
int long.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Fundamentals of Input and Output Performance

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.